[PRESET] Create/Update Compiler Preset Superman 64

[gcsmith]

I would like to create/update a compiler preset on decomp.me.

• Preset Name: Superman 64
• Platform: n64
• Compiler ID: ido5.3
• Compiler Flags: -mips2 -O1 -g3

[ethteck]

It's a bird! It's a plane! It's a decomp.me preset for you